bdaejec | 4f1bcdcbc93f0edf7a5b94c5da7b46ee72d4ba9619862036ed1cb202a07385c2

Analysis

max time kernel
148s
max time network
112s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
24/08/2026, 03:54

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General

Target
4f1bcdcbc93f0edf7a5b94c5da7b46ee72d4ba9619862036ed1cb202a07385c2.exe
Size 792KB
Sample260824-ef7j7aca57
SHA256 4f1bcdcbc93f0edf7a5b94c5da7b46ee72d4ba9619862036ed1cb202a07385c2
MD5 502d888ea54c803993572355cc829b54
SHA1 408ad3c6791d64372ac3583717efa33562d47a35
SHA512 459356b89907a972b7eacbbaa5ac8147c62105ccc0bcc42ae1bbb9133eb3929a1f6dc9b64860ec5c6daeba69cb058a56276f554f3e5c24cef5c25eaaea68e016
SSDEEP 12288:QOl/e0TCHSyxtbdGDtAl/HTG8EHpUMc4PwunvuhEFo:Qo/ebHSwdQDahHRjM9wQ2h0o
TLSH
T1890523623522F273C44286327863D362462E78B1097AA443F7494F1D3F727A2DAF674E
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

aspackv2 backdoor discovery execution bdaejec djvu ransomware

Malware Config

Extracted

Family

djvu

http://fuyt.org/fhsgtsspen6/get.php

Attributes

extension
.mmuz
offline_id
dYUDKE4rrBmSPsf8srHMsyP40jle9uyxDDCfdxt1
payload_url
http://zerit.top/dl/build2.exe

http://fuyt.org/files/1/build3.exe
ransomnote
ATTENTION! Don't worry, you can return all your files! All your files like pictures, databases, documents and other important are encrypted with strongest encryption and unique key. The only method of recovering files is to purchase decrypt tool and unique key for you. This software will decrypt all your encrypted files. What guarantees you have? You can send one of your encrypted file from your PC and we decrypt it for free. But we can decrypt only 1 file for free. File must not contain valuable information. You can get and look video overview decrypt tool: https://we.tl/t-NdDG3HIUZp Price of private key and decrypt software is $980. Discount 50% available if you contact us first 72 hours, that's price for you is $490. Please note that you'll never restore your data without payment. Check your e-mail "Spam" or "Junk" folder if you don't get answer more than 6 hours. To get this software you need write on our e-mail: [email protected] Reserve e-mail address to contact us: [email protected] Your personal ID: 0428Jsfkjn

rsa_pubkey.plain

Extracted

Family

bdaejec

ddos.dnsnb8.net

Signatures

Family: Bdaejec
Bdaejec is a backdoor written in C++.
backdoor bdaejec
Family: Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware djvu

Detected Djvu ransomware 2 IoCs

resource	yara_rule
behavioral2/memory/2992-9-0x0000000002410000-0x000000000252B000-memory.dmp	family_djvu
behavioral2/memory/4392-10-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

Detects Bdaejec Backdoor. 1 IoCs

Bdaejec is backdoor written in C++.

resource	yara_rule
behavioral2/memory/4364-15-0x0000000000D30000-0x0000000000D39000-memory.dmp	family_bdaejec_backdoor

ASPack v2.12-2.42 1 IoCs

Detects executables packed with ASPack v2.12-2.42

aspackv2

resource	yara_rule
behavioral2/files/0x0009000000016cfd-4.dat	aspack_v212_v242

Executes dropped EXE 1 IoCs

pid	Process
4364	OmbNjE.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2992 set thread context of 4392	2992	4f1bcdcbc93f0edf7a5b94c5da7b46ee72d4ba9619862036ed1cb202a07385c2.exe	90

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\javac.exe	OmbNjE.exe
File opened for modification	C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe	OmbNjE.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\jarsigner.exe	OmbNjE.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\POWERPNT.EXE	OmbNjE.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\DCF\Common.DBConnection.exe	OmbNjE.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AdobeCollabSync.exe	OmbNjE.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\bin\keytool.exe	OmbNjE.exe
File opened for modification	C:\Program Files\Mozilla Firefox\maintenanceservice_installer.exe	OmbNjE.exe
File opened for modification	C:\Program Files\Mozilla Firefox\updater.exe	OmbNjE.exe
File opened for modification	C:\Program Files\Windows Defender\MpDlpService.exe	OmbNjE.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Client\AppVDllSurrogate32.exe	OmbNjE.exe
File opened for modification	C:\Program Files\Google\Chrome\Application\140.0.7339.81\notification_helper.exe	OmbNjE.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\rmiregistry.exe	OmbNjE.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\bin\javacpl.exe	OmbNjE.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\ADDINS\Microsoft Power Query for Excel Integrated\bin\Microsoft.Mashup.Container.NetFX45.exe	OmbNjE.exe
File opened for modification	C:\Program Files\Windows Defender\MsMpEng.exe	OmbNjE.exe
File opened for modification	C:\Program Files\Windows Defender Advanced Threat Protection\SenseTVM.exe	OmbNjE.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\AppSharingHookController.exe	OmbNjE.exe
File opened for modification	C:\Program Files\Mozilla Firefox\uninstall\helper.exe	OmbNjE.exe
File opened for modification	C:\Program Files (x86)\Windows Defender\MpCmdRun.exe	OmbNjE.exe
File opened for modification	C:\Program Files (x86)\Windows Mail\wab.exe	OmbNjE.exe
File opened for modification	C:\Program Files\Google\Chrome\Application\140.0.7339.81\Installer\setup.exe	OmbNjE.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\bin\jabswitch.exe	OmbNjE.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroRd32.exe	OmbNjE.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\appletviewer.exe	OmbNjE.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\javacpl.exe	OmbNjE.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\ONENOTEM.EXE	OmbNjE.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\orbd.exe	OmbNjE.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\bin\jp2launcher.exe	OmbNjE.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\NAMECONTROLSERVER.EXE	OmbNjE.exe
File opened for modification	C:\Program Files (x86)\Mozilla Maintenance Service\Uninstall.exe	OmbNjE.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\javah.exe	OmbNjE.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\rmid.exe	OmbNjE.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\wsimport.exe	OmbNjE.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\bin\java.exe	OmbNjE.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\bin\orbd.exe	OmbNjE.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\orbd.exe	OmbNjE.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\MSOSREC.EXE	OmbNjE.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\extcheck.exe	OmbNjE.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\bin\rmid.exe	OmbNjE.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\SETLANG.EXE	OmbNjE.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\ADDINS\Microsoft Power Query for Excel Integrated\bin\Microsoft.Mashup.Container.Loader.exe	OmbNjE.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\javaw.exe	OmbNjE.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\CLVIEW.EXE	OmbNjE.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\msoia.exe	OmbNjE.exe
File opened for modification	C:\Program Files\Google\Chrome\Application\140.0.7339.81\os_update_handler.exe	OmbNjE.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\bin\unpack200.exe	OmbNjE.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\WINWORD.EXE	OmbNjE.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroLayoutRecognizer\AcroLayoutRecognizer.exe	OmbNjE.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroTextExtractor.exe	OmbNjE.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\jhat.exe	OmbNjE.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\jinfo.exe	OmbNjE.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\klist.exe	OmbNjE.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\SkypeSrv\SKYPESERVER.EXE	OmbNjE.exe
File opened for modification	C:\Program Files\Windows Defender\mpextms.exe	OmbNjE.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\javaw.exe	OmbNjE.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\officeappguardwin32.exe	OmbNjE.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.SecHealthUI_1000.26100.1.0_x64__8wekyb3d8bbwe\SecHealthUI.exe	OmbNjE.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroRd32Info.exe	OmbNjE.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\jjs.exe	OmbNjE.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\PDFREFLOW.EXE	OmbNjE.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\OFFICE16\OLicenseHeartbeat.exe	OmbNjE.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe	OmbNjE.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\Browser\WCChromeExtn\WCChromeNativeMessagingHost.exe	OmbNjE.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Executes a command shell one-liner 1 TTPs 1 IoCs

Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

execution

Windows Command Shell

T1059.003

pid	Process
5368	cmd.exe

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4f1bcdcbc93f0edf7a5b94c5da7b46ee72d4ba9619862036ed1cb202a07385c2.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	OmbNjE.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2992 wrote to memory of 4364	2992	4f1bcdcbc93f0edf7a5b94c5da7b46ee72d4ba9619862036ed1cb202a07385c2.exe	89
PID 2992 wrote to memory of 4392	2992	4f1bcdcbc93f0edf7a5b94c5da7b46ee72d4ba9619862036ed1cb202a07385c2.exe	90
PID 2992 wrote to memory of 4392	2992	4f1bcdcbc93f0edf7a5b94c5da7b46ee72d4ba9619862036ed1cb202a07385c2.exe	90
PID 2992 wrote to memory of 4392	2992	4f1bcdcbc93f0edf7a5b94c5da7b46ee72d4ba9619862036ed1cb202a07385c2.exe	90
PID 2992 wrote to memory of 4392	2992	4f1bcdcbc93f0edf7a5b94c5da7b46ee72d4ba9619862036ed1cb202a07385c2.exe	90
PID 2992 wrote to memory of 4392	2992	4f1bcdcbc93f0edf7a5b94c5da7b46ee72d4ba9619862036ed1cb202a07385c2.exe	90
PID 2992 wrote to memory of 4392	2992	4f1bcdcbc93f0edf7a5b94c5da7b46ee72d4ba9619862036ed1cb202a07385c2.exe	90
PID 2992 wrote to memory of 4392	2992	4f1bcdcbc93f0edf7a5b94c5da7b46ee72d4ba9619862036ed1cb202a07385c2.exe	90
PID 4364 wrote to memory of 5368	4364	OmbNjE.exe	92

C:\Users\Admin\AppData\Local\Temp\4f1bcdcbc93f0edf7a5b94c5da7b46ee72d4ba9619862036ed1cb202a07385c2.exe
"C:\Users\Admin\AppData\Local\Temp\4f1bcdcbc93f0edf7a5b94c5da7b46ee72d4ba9619862036ed1cb202a07385c2.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2992
- C:\Users\Admin\AppData\Local\Temp\OmbNjE.exe
  C:\Users\Admin\AppData\Local\Temp\OmbNjE.exe
  2⤵
  - Executes dropped EXE
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4364
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\1dbd3a94.bat" "
    3⤵
    - Executes a command shell one-liner
    - System Location Discovery: System Language Discovery
    PID:5368
- C:\Users\Admin\AppData\Local\Temp\4f1bcdcbc93f0edf7a5b94c5da7b46ee72d4ba9619862036ed1cb202a07385c2.exe
  "C:\Users\Admin\AppData\Local\Temp\4f1bcdcbc93f0edf7a5b94c5da7b46ee72d4ba9619862036ed1cb202a07385c2.exe"
  2⤵
  PID:4392

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Windows Command Shell

T1059.003

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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1dbd3a94.bat

Path C:\Users\Admin\AppData\Local\Temp\1dbd3a94.bat
Size 187B
SHA256 899d49fbc984204fa822d2cfb872af307d6b6593fed6b59be765b4caf53de76f
MD5 f70b42251e9a6ae33d683935445f9f58
SHA1 313148dcf4f31bb3f155bd9c29b5950b03835723
SHA512 adce5fa19b1b476297d1ea9cd53a5e48eeefed264f6f2854c0f95a86a55d84c454c3e142a1aa9f516f9b68ea6903fd20ab98515a06b3ce04dc9e562b03c426ec
TLSH
T190C012018287CBB9185450170AE2614DC06518583B5B6B214B30C89E659640DF5C3341
MD5 SHA1 SHA512 TLSH

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OmbNjE.exe

Path C:\Users\Admin\AppData\Local\Temp\OmbNjE.exe
Size 15KB
SHA256 4485df22c627fa0bb899d79aa6ff29bc5be1dbc3caa2b7a490809338d54b7794
MD5 f7d21de5c4e81341eccd280c11ddcc9a
SHA1 d4e9ef10d7685d491583c6fa93ae5d9105d815bd
SHA512 e4553b86b083996038bacfb979ad0b86f578f95185d8efac34a77f6cc73e491d4f70e1449bbc9eb1d62f430800c1574101b270e1cb0eeed43a83049a79b636a3
SSDEEP 384:IXZQaD7U8iu4YsAa7ZA0UvH2lsRv21yW7GbAxur6+Y9PffPz:gQGPL4vzZq2o9W7GsxBbPr
TLSH
T1A462BFB34FC098FFC4CD353341853687CB7B4670DABA617F826288372895E19AC55495
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/2992-0-0x0000000000400000-0x000000000050A000-memory.dmp

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memory/2992-8-0x0000000002370000-0x0000000002402000-memory.dmp

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memory/2992-9-0x0000000002410000-0x000000000252B000-memory.dmp

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memory/2992-14-0x0000000002370000-0x0000000002402000-memory.dmp

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memory/2992-13-0x0000000000400000-0x000000000050A000-memory.dmp

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memory/4364-5-0x0000000000D30000-0x0000000000D39000-memory.dmp

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memory/4364-15-0x0000000000D30000-0x0000000000D39000-memory.dmp

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memory/4392-10-0x0000000000400000-0x0000000000537000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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